Inspired Design. Exceptional Construction.
Turning Houses Into Dream Homes Since 1999.
Custom Build
Bring your unique vision to life. Our bespoke design process transforms your ideas into a one-of-a-kind home tailored to your lifestyle and preferences.
New Homes
Create your dream home from the ground up. We blend innovative design with functionality to craft beautiful, efficient living spaces that stand the test of time.
Additions/Extensions
Expand your horizons without changing address. Our extension designs seamlessly integrate with your existing property, adding value to your present home.
Where Craftsmanship Meets Innovation
We approach every project as a complete vision — combining thoughtful design, skilled craftsmanship, and innovative construction to create homes that are both beautiful and built to last.
A Glimpse Of Our Projects
Distinctive Homes. Timeless Craftsmanship. Refined Construction For Modern Living.
19 Grandview Place
Exceptional custom craftsmanship meets modern luxury in this beautifully rebuilt 2022 home showcasing open-concept living, designer finishes, and breathtaking city views.
1964 Montclair Court
Meticulous attention to detail defines this fully remodeled residence featuring high-end finishes, a chef-inspired kitchen, expansive outdoor living, and breathtaking views of the Acalanes and Briones hills.
1425 Camino Verde
Timeless character and modern California design come together in this thoughtfully reimagined Walnut Creek residence featuring refined finishes, light-filled living spaces, and beautifully curated outdoor living.
What our customers are saying
Here’s what people think about James Walker Co.
Christine Clark
CEO of Skyline
Ona Architecture’s community-first approach set them apart. They listened to residents’ concerns and incorporated our feedback at every stage. The resulting community center has become the heart of our neighborhood.
Sarah Chen
Horizon Properties
Ona Architecture transformed our vision into reality with their innovative sustainable design approach. Their attention to detail and commitment to environmental consciousness resulted in a building that not only looks stunning but also achieved LEED Platinum certification.
Marcus Rodriguez
Metropolitan Council
Working with Ona Architecture on our downtown revitalization project was a game-changer. Their ability to blend modern design with historical preservation created a perfect harmony that has revitalized our city center.
Emily Weber
Tech Innovations
The team at Ona Architecture designed our new headquarters with incredible vision. They created a space that perfectly reflects our company culture while maximizing productivity and employee well-being. The result is simply breathtaking.
Discover Where Your Dream Home Begins…
From initial vision to final build, we guide every project with craftsmanship, communication, and attention to detail. Contact us today to begin creating a home designed around the way you live.
25+ Years of Excellence
1,564+ Satisfied Clients
50 Industry Awards
